Annual testing, inspection, certification, and repair of commercial RPZ (Reduced Pressure Zone) backflow assemblies. Our TCEQ-licensed testers certify your valves and file the report with the city, so you stay compliant and your water stays protected.
Reduced Pressure Zone Assemblies
An RPZ, or Reduced Pressure Zone assembly, is the highest level of backflow protection and is required on high-hazard cross-connections, where a backflow event could pull contaminants into the potable water supply. Because they protect against a health hazard, RPZ assemblies must be tested and certified at least once a year, and only a TCEQ-licensed Backflow Prevention Assembly Tester may perform the test.
This page covers RPZ assemblies specifically. For all device types and the wider rules, see our commercial backflow testing page.
Testing, inspection, certification, repair, and installation of RPZ backflow assemblies.
Full test of your RPZ assemblies to verify they hold and relieve correctly, with a passing certificate on file.
Assessment of assembly condition, orientation, clearances, and drainage to catch problems before they fail.
City-approved documentation prepared and filed through Fort Worth's reporting system on your behalf.
On-site rebuilds with kits for the common RPZ families, so a failed assembly is repaired and retested the same visit.
Correctly sized, code-compliant RPZ installation for new high-hazard connections and replacements.
Insulated enclosures and freeze-proofing for exposed RPZ assemblies, a common casualty of DFW hard freezes.
RPZ protection is used on high-hazard cross-connections, including:
Systems that inject fertilizer or chemicals into the line.
Sprinkler systems using antifreeze or chemical additives.
Equipment on healthcare properties creating high-hazard risk.
Boilers with chemical treatment on the feed water.
Manufacturing and warehouse process connections.
Certain food-service equipment connections.
TCEQ-licensed testing, certification, and same-day rebuilds across Fort Worth.